[j-nsp] netflow config clue needed

[Randy Bush]

having trouble exporting flow data.  

'tcpdump -i xx port 20666' on the host foo.bar shows no packets
inbound.

config is


forwarding-options {
    monitoring foo-cflow {
	family inet {
	    output {
		cflowd foo.bar port 20666;
		export-format cflowd-version-5;
		interface so-0/1/0 {
                    source-address 666.42.7.11;
		    }
		interface fe-0/0/2 {
                    source-address 666.42.7.11;
		    }
		} 
	    }
        }
    }


    fe-0/0/2 {
        ...
        unit 0 {
            family inet {
                ...
                address 11.7.42.666/30;
                 sampling {
                     input;
		     output;
                     }
                 }
            }
        }


    so-0/1/0 {
        ...
        unit 0 {
            ...
                address 11.7.666.42/30;
                sampling {
                    input;
		    output;
                    }
                }
            }
        }


and searching the juniper web site did not help, nor did google.
though i admit i am not a search term expert (just because i
helped build the highway does not mean i can drive a car:-).

randy